Description:Ty Cobb autographed Louisville Slugger "Science of Batting" booklet. Multi-page vintage publication has been signed on the cover, "Ty Cobb 7/7/52" in green fountain pen rating 6/7-7 out of 10. Book itself has mild toning throughout and light wear to corners/edges. Uncommon signed piece and one of the only such examples we have handled with no personalization as signed by Cobb. Includes full LOA from JSA: Overall EX